My '93 GC 4.0L 6cyl dashboard temp gauge has started going crazy. It is bouncing between full cold and the correct center scale temperature. It seems to be motor load dependant such that if I step on the gas the gauge works, coasting the gauge drops. I wacked the dashboard and that does not make the gauge work. I figure it is a bad connector or the wiring is going bad at the sensor but my real question is where is the dashboard gauge sender located on the engine?
I see one temp sensor at the front of the engine right near the thermostat with two wires going to it but I think that one is for the fuel injection. In my case the engine runs fine when the gauge is at mininum temp, gas mileage is about the same as ever, and I am not getting any check engine lights or codes so it seems as though there is probably separate sensors. Can anyone give me a hint where the sender is?
Walt B.